Related Experiment Video
Updated: May 28, 2026
Studying Orthodontic Tooth Movement in Mice
Published on: August 2, 2024
The effect of IL-1 receptor antagonist on orthodontic tooth movement in mice
Juliana Tito Salla1, Silvana Rodrigues de Albuquerque Taddei, Celso Martins Queiroz-Junior
1Department of Oral Surgery and Pathology, Universidade Federal de Minas Gerais, Minas Gerais, Brazil.
Objective:
Orthodontic tooth movement (OTM) is achieved by alveolar bone remodelling induced by mechanical loading. Whilst interleukin-1 (IL-1) is directly involved in OTM, the role of interleukin-1 receptor antagonist (IL-1Ra), a naturally occurring IL-1 antagonist, is not completely defined. Therefore, the aim of this study was to investigate the effects of IL-1Ra on OTM.
Methods:
An orthodontic appliance was placed in C57BL6 mice treated with vehicle or IL-1Ra (10 mg/kg/day). OTM and TRAP-positive osteoclasts were evaluated after 12 days of mechanical loading and the levels of cytokines on periodontal tissues were analysed by ELISA after 12 and 72 h.
Results:
Mice treated with IL-1Ra showed diminished OTM and decreased numbers of TRAP-positive osteoclasts. In line with this, lower levels of IL-1β and TNF-α, and higher levels of IL-10, were observed on periodontal tissues of IL-1Ra-treated mice in relation to the vehicle-treated group.
Conclusion:
The present study suggests that IL-1Ra downregulates OTM, probably by its anti-inflammatory actions.
